Powertrax 1810-LR Lock Right Locker Fits select: 1966-1978 FORD MUSTANG, 1975-1986 FORD F150

Differential - Lock Right Locker - Lock Right Locker - 9 in. - 28 Spline - For Open Differential. Features: Brute Force Devices For Rugged Applications. Best Value For Greatly Increased Traction. Complete Replacement Of Diff. Case Not Req.. Simple Installation. Ring And Pinion Setup Not Altered. Installs Easily In Front/Rear Or Both. Proven In Most Demanding Applications. The POWERTRAX LOCK-RIGHT Locker is the original locking differential that could be easily installed in existing case assemblies without any special tools or setup equipment. It has been widely used in demanding off-road applications around the world requiring extreme traction output and high-strength. Because the LOCK-RIGHT eliminates wheel spin-up and therefore its associated driveline trauma is negated, the strength and integrity of its surrounding original case and other driveline components are, in effect, substantially increased. Cases that occasionally fail with open or limited-slip/posi differentials become one of the strongest links in the drive train when equipped with the POWERTRAX LOCK-RIGHT LOCKER. The LOCK-RIGHT has been used in the harshest conditions around the world by hard-core off-roaders, in towing applications, and even United Nation vehicles in rugged terrain.